Initial Study on Determining the Design Values of Macro Synthetic FRC for Floors-on-grade

Author(s): William P. Boshoff, Hermanus L Bester and Celeste Viljoen
Paper category: Proceedings
Book title: Proceedings of International Conferences (ICACMS) Advances in Construction Materials and systems Vol 2
Editor(s): Manu Santhanam, Ravindra Gettu, Radhakrishna G. Pillai, Sunitha K. Nayar
ISBN: 978-2-35158-194-0
e-ISBN: 978-2-35158-191-9
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 226-235
Total Pages: 10
Language : English

Abstract: Fibre reinforced concrete has been used for some time in concrete floors-on-grade and is probably the most successful application of FRC other than shotcreting in tunnels and mines. The most important material property of FRC is the post peak resistance which is typically measured using notched- or unnotched flexural beam tests. The number of fibres bridging the small scale test cracks are small, thus geometric variation of fibre distribution adds variability that will not be found in larger scale implementations where geometric variations are averaged out over a larger crack area. In the derivation of characteristic- and design values this scale effect need to be properly accounted for to achieve appropriate reliability without over conservatism. This paper presents a large set of flexural tests of macro synthetic FRC to firstly evaluate the effect of scatter. Current guidelines on calculating the characteristic and design values are also reviewed and suggestions are made on how to determine design values for macro synthetic FRC for concrete floors-on-grade

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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